[OH-]=1x10-12
[OH-]=1x10-5
[H+]=1x10-3
[H+]=1x10-5
[OH-]=1x10-9
[H+]=1x10-11
[H+]=1x10-14
[H+]=1x10-2
[OH-]=1x10-4
[OH-]=1x10-7
pOH=5
pOH=9
pH=3
pOH=4
pOH=12
pH=2
pH=5
pH=14
pOH=7
pH=11
